Its hardly touched the metal but eradicated the rust here......it does render the metal greyish but a bit of good polish and it would bring back the shine. View attachment 60930 View attachment 60932
Does it make it go faster.
Regarding doing slides and beds which are in all fairness precision items less than the deformation caused by soda blasting. The greyed finish is peppered pot marks just like fine grit blasting, if it don't mark or alter colour its done nothing.
Other bad thing due to the minute pot marks the beds and slides will wear twice as quick if not more having far less contact area.